Body Mass Index Calculator

How to use this calculator

Enter Body mass, Height. The calculator applies the stated relationship and keeps full precision until the displayed result is formatted.

Formula and method

BMI = mass / height^2

The calculator uses the values you enter and evaluates this relationship with standard real-number arithmetic. Intermediate values keep full floating-point precision before the displayed result is formatted.

Worked example

Using the example values already filled into the calculator gives BMI = 22.857143 kg/m^2. Change any input to calculate your own result.

Assumptions and limitations

BMI is a screening ratio, not a diagnosis. It does not directly measure body fat or health status.

This educational tool is not a diagnosis, treatment recommendation, or substitute for professional medical advice.

Verify important decisions independently and see our methods and limitations.